Title:
SPEECH APPARATUS AND AUDIO SIGNAL CORRECTION PROGRAM
Document Type and Number:
Japanese Patent JP2017123554
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To prevent an occurrence of echo by learning erroneous transfer characteristics during a call.SOLUTION: The speech apparatus includes: a receiver; a first microphone; a second microphone; an echo suppression unit, and a transfer characteristic learning unit. The receiver outputs an audio signal as an air conduction sound. The first microphone picks up the air conduction sound and the second microphone picks up the bone conduction sound. The echo suppression unit suppresses the echo component included in the air-conduction sound signal input from the first microphone on the basis of the transfer characteristic of the sound from the receiver to the first microphone. When the input level of the bone conduction sound signal input from the second microphone is equal to or less than a predetermined threshold value, the transfer characteristic learning unit learns the transfer characteristic on the basis of the received speech signal and the air conduction sound signal outputted from the receiver.SELECTED DRAWING: Figure 2
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Inventors:
ENDO KAORI
Application Number:
JP2016001367A
Publication Date:
July 13, 2017
Filing Date:
January 06, 2016
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
H04M1/60; H04B3/23; H04R1/00; H04R3/00; H04R3/02
Attorney, Agent or Firm:
Yoshiyuki Osuga
virtue Tamio Ei
virtue Tamio Ei
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